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dc.contributor.authorLi, Yifengen_US
dc.contributor.authorBao, Jieen_US
dc.contributor.authorSkyllas-Kazacos, Mariaen_US
dc.contributor.authorAkter, Md Parvezen_US
dc.contributor.authorZhang, Xinanen_US
dc.contributor.authorFletcher, Johnen_US
dc.identifier.citationLi, Y., Bao, J., Skyllas-Kazacos, M., Akter, M. P., Zhang, X. & Fletcher, J. (2019). Studies on dynamic responses and impedance of the vanadium redox flow battery. Applied Energy, 237, 91-102.
dc.description.abstractThis paper studies the feasibility of using the vanadium redox flow battery (VRB) for power quality control applications. This work investigates the dynamic voltage and current responses of the VRB to load changes over a range of frequencies (up to 5 kHz), through experimental studies on a laboratory scale testing system. Experiments were carried out under different operating conditions to examine the effects of system SOC, discharging current and temperature. The analysis shows that the magnitude of battery impedance is higher at low frequencies but lower at high frequencies. These results suggest that the VRB has the ability to handle charging-discharging power fluctuations in a frequency range up to a kHz level. By using the concept of fractional order systems, the transient behaviour of the VRB cell was modelled as an equivalent circuit that utilises a constant phase element to represent the electrochemical double layer and a Warburg element to describe the effect of concentration polarisation. This equivalent circuit model is useful for electrical interface design and power flow control applications.en_US
dc.relation.ispartofApplied Energyen_US
dc.rights© 2019 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleStudies on dynamic responses and impedance of the vanadium redox flow batteryen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.subject.keywordsVanadium Redox Flow Batteryen_US
dc.subject.keywordsBattery Dynamic Responseen_US
dc.description.acknowledgementThis work is supported by the Australian Research Council Discovery Project DP150103100. The first author acknowledges the support of an Australian Postgraduate Award and UNSW Engineering Research Award.en_US
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